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Zanzabum
3 years ago
9

Among the 1018 respondents, 179 said that cellular phones are “not at all annoying”.

Mathematics
1 answer:
Grace [21]3 years ago
8 0
179/1018=.17580
.17580*100=17.6%
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Assuming the amount of money college students spend on text books each semester is symmetrical with a mean of 500 and a standard
TiliK225 [7]

16% percent of the students paid MORE than Jane.

The mean(μ) of money spent on textbooks is 500

The standard deviation(σ) of money spent on textbooks is 50

Money paid by Jane for her books is $550

We will use this formula,

Ζ=x-μ/σ

To find: the percentage of students paid MORE than Jane for the textbooks

P(X > 550)=?

Solution:

P(X > 550)=1-P(X≤550)

=1-P(Ζ≤\frac{550-500}{50} )

=1-P(Ζ≤ 1)

=1-0.8413

=0.1587

≈16%

Therefore, 16% percent (approx) of the students paid MORE than Jane.

Learn more about mean and standard deviation here brainly.com/question/4388715

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3 0
2 years ago
Estimate 53.83-36.464 by first rounding each number to the nearest whole number.
Free_Kalibri [48]

Answer:

18

Step-by-step explanation:

53.83 rounds to 54

36.464 rounds to 36

54-46=18

7 0
3 years ago
Read 2 more answers
Write the equation of the line that is perpendicular to the line 3x + y = 7 and passes through the point (6, -1).
ira [324]
Line:
3x+y=7
y=-3x+7

Slope of Perpendicular Line: 1/3x

For the perpendicular line to contain point (6,-1) the y-intercept would be (0,1), thus the equation of the line would be y=1/3x+1

y=1/3x+1

5 0
3 years ago
**FIRST CORRECT ANSWER GETS BRAINLEST**
puteri [66]

Answer:

C.) y = 5/4 x

Step-by-step explanation:

5/4 multiplied by 0.4 is 0.5

7 0
2 years ago
Area of a regular decagon with side length of 8in
Scrat [10]

Answer:

492.43in²

Step-by-step explanation:

I might be wrong.

4 0
3 years ago
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